1. Radio
 / Modified feb 11, 2011 7:37 a.m.

Where Did We Come From?

NOVA scienceNOW examines whether the key to our planet's existence might have been the explosive shockwave of an ancient supernova. Wednesday at 8 p.m. on PBS-HD by Colleen Greer

Meet a chemist who has yielded a new kind of "recipe" for natural processes to assemble and create the building blocks of life. And see how the head louse, a creepy critter that's been sucking our blood for millions of years, is offering clues about our evolution. Finally, meet neuroscientist André Fenton, who is looking into erasing painful memories with an injection.

nova_science_live_fenton617x347 Can a simple injection erase a painful memory? Andre Fenton (pictured) says it can.
PBS

Wednesday 8 p.m. on PBS-HD.

NOVA scienceNOW

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